How to get more decimal points for water depth?

[poroggo]

I have an offline Garmin map file (.img) that has water depth on it.



In a screenshot rendered by the map's creator, the water depth values have one decimal point of precision, but in OruxMaps they're rounded to the nearest metre. For instance, instead of 12.8 metres it shows 13 metres. Here's a comparison image of the same place on http://i.imgur.com/DW1KNYF.png">OruxMaps and in http://i.imgur.com/4TAHwT7.png">the sample render.



Is there some way to change the precision of this depth, or is this an issue with the map itself?



Thanks in advance!